- 0.133u3: Galaxian sound updates [Couriersud]: Moon Cresta and Galaxian now have their respective schematics emulated, i.e. Moon Cresta has a slightly different mixing stage. Cleaned up driver, added some section titles and comments, removed old code. Removed emu_timer, this was causing a stream of stream_updates only updating 3 samples. Replaced with discrete timer module DSS_TIMER now. Use DISCRETE_NOTE for pitch generation; it is more accurate (within the one ms where the pitch changes) and saves a node. Use DISCRETE_BITS_DECODE and save 2 nodes.

- 0.133u2: Created discrete sound emulation for galaxian [Couriersud]: Changed all audio related AM_WRITE to AM_DEV_WRITE. Moved discrete sound related pieces such as initialization into audio/galaxian.h. Split some memory maps into sound related and not sound related parts. Added possibility in discrete.h to select hardware (galaxian/moon cresta) at compile time. This leads to slightly different volume levels. Hit sound (explosion) has been hacked to increase volume. Currently, we can not accurately model the switch/opamp filter circuit. Rewrote timer code so that the pitch timer is only used when it produces audible results. Brian Troha fixed Kamakazi III's dipswitch setting (the same as superg) and relabeled it a superg hack. Also the dipswitch setting for the Taito license was the same as superg so I eliminated one. Changed description of clone 'Kamakazi III' to 'Kamakazi III (superg hack)'.

- 0.37b12: New filtering code for the audio mixer. It is applied to audio streams generated at a sampling rate different from the sound card's one, improving quality. Some examples with a very audible difference are Galaxian.

- 0.31: Known issues: Bullet placement is not correct in cocktail mode. Changed description of clone 'Galaxian Part 1' to 'Space Invaders Galactica' and clone 'Super Galaxian' to 'Super Galaxians'.

- 13th April 1998: Malcor dumped Moon Alien Part 2 (older version).

- 0.29: Andrew Scott improved the Galaxian background hum, it also is no longer incorrectly played in Moon Cresta & others. In some games (e.g. Pacman, Galaxian, Rally X) the NumLock and CapsLock leds emulate the 1 Player/2 Players start lamps [Sean Gugler].

- 0.27: Andrew Scott and Robert R. Anschuetz II improved sound support in Galaxian and clones. The background noise is now emulated, while the shoot noise still requires a sample. These changes also affect other games using the same sound routines.

- 0.26a: Mirko Buffoni worked with the wrong source, now everything is back to normality in Galaxian.

- 0.25: Robert Anschuetz provided infos about how to enable a shot sample with Moon Quasar, Moon Cresta, Galaxian and clones.

- 0.18: Nicola Salmoria added some lousy noise to Galaxian.

- 0.15: Nicola Salmoria added Galaxian (Namco). This version is known to be original, it has Namco copyright and the code is slightly different from the other Galaxian (which has Midway copyright). Renamed (galaxian) to (galmidw).

- 0.14: Nicola Salmoria added high score saving to Galaxian.

- 0.06: Star background in Galaxians & co [Nicola Salmoria]. The way I calculate it is probably not correct, anyway it looks reasonable.

- 0.05: Nicola Salmoria added 'Galaxian (Midway)' (Midway 1979) and clones Galaxian (Namco, modified), Super Galaxian, Galaxian Part X, Galaxian Part 1, Galaxian Part 4 and Galaxian Turbo. Game is playable with accurate colors and limited sound. Control: Arrows = Move around, CTRL = Fire and F2 = Test mode. There are so many clones here that I'm not even sure which is the "original" one. The dip switch menu might display wrong settings. Compiled from information provided by friends and Uncles on RGVAC. Info on Galaxians taken from Arcade Emulator by Robert Anschuetz. Known issues: Only one sound channel is emulated, and I'm not sure it's correct. No star background. What does dip switch 6 do?